Cleansing and strengthening of the eyes has been dealt with in Yoga.
Of the cleansing techniques, even Jala Neti is noted for its beneficial effect to the eyes.
But the cleansing technique directly related to the eyes is known as Trataka or Yogic Gazing.
While Trataka has been classified as a cleansing (Shatkriya or Shatkarma) technique, it is also put under the category of Pratyahara techniques for its helpful effect in developing concentration and visual powers.
Practice of Trataka is said to have corrected several eye disorders. To know more about Trataka and how to practice, please visit the following links: